Monday, May 31, 2010

Small forest patches are worth saving

As the human population spreads across the globe, forested areas become more and more fragmented. There has been some question as whether the tiny patches of green interspersed between urban areas are sufficient to sustain the animals that once lived in those areas. For one little bird, the answer appears to be ‘yes’.

Swainson’s thrushes (Catharus ustulatus) migrate between Canada and South America. Along the way, they require refueling stopovers where they fill up on insects and berries. Paul Rodewald and Stephen Matthews from The Ohio State University trapped and radio-taggedthe birds while they were migrating north through Columbus Ohio, and released them into seven woodlots, ranging in size from one hectare (1.7 acres) to about 38 hectares (93.9 acres). The researchers then observed whether the birds remained within the small forest patches where they were originally placed until ready to continue migrating, or moved to other nearby regions. It turned out that almost all the birds found sufficient food in even the smallest sites.

A researcher attaches a radio transmitter to the back feathers of a Swainson’s Thrush.

Photo by Ken Chamberlain, Ohio State University.

Obviously, this finding does not translate to all species. In particular, large predators are unlikely to find enough food in small fragmented patches of forest. However, it is nice to know that saving green areas between housing developments can allow some species to continue to thrive.

Stochastic Scientist? What's up with that?

Why the Stochastic Scientist? As I'm sure you all know, 'stochastic' is another word for 'random', which is what I intend for the focus of this blog. Although my formal training is as a molecular biologist, there are many other fields of science that are also fascinating and beautiful. It's my intention to blog about which ever scientific discovery or invention catches my, and hopefully your, fancy.

I also hope to inspire people to learn more about science. By choosing among a huge variety of scientific endeavors, I'll undoubtably hit upon something that will pique my readers' interest.

I guess I could have called my blog 'The Joy of Science', but that wouldn't have been quite so random.